main

prev        

Statement of a problem № 42171

        next    

A source of sound with natural frequency vo = 1.8 kHz moves uniformly along a straight line separated from a stationary observer by a distance l = 250 m. The velocity of the source is equal to η = 0.80 fraction of the velocity of sound. Find: (a) The frequency of sound received by the observer at the moment when the source gets closest to him; (b) The distance between the source and the observer at the moment when the observer receives a frequency v = vo.




New search. (Also 5349 free access solutions)